I don't really know. But usually, if the manga has a strong fan base and good sales, there's a chance it could continue. We'll just have to wait and see.
The Misfit of Demon King Academy manga has finished. It had a fulfilling conclusion that tied up loose ends and gave a satisfying ending to the series.
There are likely other demon students in the academy. For example, his classmates who may be rivals, friends, or a combination of both. They each have their own personalities, powers, and goals that interact with the main character's journey.
Another important theme could be change. The entire world has changed since his 'previous life' and he has to adapt. This includes changes in the power dynamics among demons, as well as the values and expectations in the academy environment.
Sasha Necron is another great character. She is strong - willed and often competes with Anos. Her pride and determination make her stand out. Then there's Zepes Indu, who is initially an antagonist but has a more nuanced character as the story progresses, adding depth to the overall narrative.
One of the main themes is the idea of redemption. The main character, Anos Voldigoad, was once a feared Demon King but now has to navigate a world that has changed a great deal. Another theme is power and how it is perceived. Anos has immense power but in the new academy setting, he has to deal with those who underestimate him or are jealous of his strength.